diff --git a/docs/server-protocol.md b/docs/server-protocol.md
index 0c700f3..56edd8c 100644
--- a/docs/server-protocol.md
+++ b/docs/server-protocol.md
@@ -9,3 +9,6 @@ JSON-API Independer Server. Please also visit [escape rules](escape-rules.md).
     - `receiver`: Receiver of the message
     - `author`: Author of the message
     - `msg`: Content of the message
+
+- `<server-url>/v1/clearmsg/<receiverId>` (GET): Clear all messages
+    - Response `OK`
diff --git a/independer-server/app/app.py b/independer-server/app/app.py
index ca34129..f02c073 100644
--- a/independer-server/app/app.py
+++ b/independer-server/app/app.py
@@ -35,6 +35,18 @@ def routeGetMessages(receiverId):
 
     return retDict
 
+@app.route('/v1/clearmsg/<receiverId>')
+def routeClearMessages(receiverId):
+    conn = get_db_connection()
+    cur = conn.cursor()
+    cur.execute(
+        "UPDATE messages SET active = false WHERE receiver = '" + receiverId + "';")
+    conn.commit()
+    cur.close()
+    conn.close()
+
+    return "OK"
+
 
 @app.route('/v1/msg', methods=['POST'])
 def routeWriteMessage():
diff --git a/independer-server/app/init_db.py b/independer-server/app/init_db.py
index 9b1c3fe..b700775 100644
--- a/independer-server/app/init_db.py
+++ b/independer-server/app/init_db.py
@@ -19,9 +19,9 @@
 cur.execute('CREATE TABLE  IF NOT EXISTS messages (id serial PRIMARY KEY,'
             'receiver varchar (5) NOT NULL,'
             'author varchar (5) NOT NULL,'
-            'msg text,'
-            'active boolean,'
-            'date_added date DEFAULT CURRENT_TIMESTAMP);'
+            'msg text NOT NULL,'
+            'active boolean NOT NULL,'
+            'date_added date DEFAULT CURRENT_TIMESTAMP NOT NULL);'
             )
 
 # Insert data into the table